FSQ321 - Fairchild Semiconductor

FSQ321 Green Mode Fairchild Power Switch

A Valley Switching Converter generally shows lower EMI and higher power conversion efficiency than a conventional hard-switched converter with a fixed switching frequency. The FSQ-series is an integrated Pulse-Width Modulation (PWM) controller and SenseFET specifically designed for valley switching operation with minimal external components. The PWM controll.

Features

 Optimized for Valley Switching Converter (VSC)
 Low EMI through Variable Frequency Control and Inherent Frequency Modulation
 High Efficiency through Minimum Voltage Switching
 Narrow Frequency Variation Range Over Wide Load and Input Voltage Variation
 Advanced Burst-Mode Operation for Low Standby Power Consumption
 Pulse-by-Pulse Current Limit
 Protection Functions: Overload Protection (OLP), Over-Voltage Protection (OVP), Abnormal OverCurrent Protection (AOCP), Internal Thermal Shutdown (TSD)
 Under-Voltage Lockout (UVLO) with Hysteresis
 Internal Startup Circuit
 Internal High-V.